| Title | Long-term observations of daily currents at SAMBA Mooring 8 (October 2020 - September 2022) |
|---|---|
| Project | South Atlantic Meridional Overturning Circulation (SAMOC-SA) |
| Authors |
Lamont, Tarron van den Berg, Marcel Louw, Gavin |
| Publisher | Department of Forestry, Fisheries and the Environment (2025) |
| Contributors |
Contact Person: van den Berg, Marcel |
| Abstract | Here we present processed magnitude and direction of daily currents in the upper part of the water column (43.25 - 443.25 m) from an ADCP located at a depth of 468m at M8 (34.4795°S; 17.3411°E) along the South Atlantic MOC Basin-scale Array (SAMBA) transect in the Cape Basin region of the South Atlantic Ocean, between 05 October 2020 and 29 September 2022. The South African component of the international South Atlantic Meridional Overturning Circulation project (SAMOC-SA) aims to characterise the time-mean and time-varying components of the SAMOC in the South Atlantic Ocean and monitor the variability of the main Southern Ocean frontal systems associated with the Antarctic Circumpolar Current (ACC), south of Africa. |
| Methods | A subsurface-mounted, upward-looking, 75 kHz RD Instruments Acoustic Doppler Current Profiler (ADCP) was configured with a bin size of 16m and a blanking distance of 7m, and deployed at a depth of 468m at location M8 (34.4795°S; 17.3411°E), along the South Atlantic MOC Basin-scale Array (SAMBA) transect in the Cape Basin region of the South Atlantic Ocean. The instrument measured hourly magnitude and direction in the upper part of the water column (43.25 - 443.25 m) between 05 October 2020 and 29 September 2022. These hourly values were corrected for magnetic declination, and then averaged to daily means for each depth bin. Only hourly values which showed ≥ 75 % good beam data were used, and daily values were only generated for days on which there were 75 % or more hourly readings. |
| Data | |
| Temporal extent | 05 Oct 2020 – 29 Sep 2022 |
| Geographic extent |
Cape Basin, South Atlantic Ocean
Lat: -34.4795 |
| Vertical extent |
Max: -443.25 m Min: -43.25 m |
| Keywords | ADCP , currents , moorings , SOUTH ATLANTIC OCEAN |
| Related resources |
|